EP3275939A1 - Réservoir composite sous pression avec revêtement monocouche - Google Patents
Réservoir composite sous pression avec revêtement monocouche Download PDFInfo
- Publication number
- EP3275939A1 EP3275939A1 EP16192469.1A EP16192469A EP3275939A1 EP 3275939 A1 EP3275939 A1 EP 3275939A1 EP 16192469 A EP16192469 A EP 16192469A EP 3275939 A1 EP3275939 A1 EP 3275939A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liner
- polymer composition
- weight
- pressure vessel
- composite pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- B60K15/03177—Fuel tanks made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material
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- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
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- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
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- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
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- B29C66/1142—Single butt to butt joints
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- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
- B29K2077/10—Aromatic polyamides [polyaramides] or derivatives thereof
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- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0178—Cars
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Definitions
- the present invention relates to a liner for a composite pressure vessel.
- it relates to a non-metallic liner for the storage of hydrogen.
- Some vehicles use compressed gas as fuel, in particular hydrogen.
- a composite pressure vessel Generally, the composite pressure vessel comprises a liner for the storage of hydrogen.
- an outer filament winding is applied around the liner.
- the filament winding can come in the form of a carbon fiber filament composite wound around the outside of the liner.
- Non-metallic liners may be of the monolayer type or multilayer type.
- liners of the monolayer type comprise a single layer of polyamide.
- PA-6 is generally used.
- a disadvantage of these known liners is that they have an important thickness (typically above 4mm), in order to meet permeability standards in relation to the type of use for which they are designed and the environmental requirements that they have to satisfy. This increases the weight of the pressure vessel and thus increases the fuel consumption. This also increases the space occupied by the pressure vessel on the vehicle.
- liners of the multilayer type comprise a structure of 6 layers: an inner thermoplastic-based layer, preferably HDPE; a first layer of adhesive; a layer comprising a barrier resin, preferably EVOH; a second layer of adhesive; a layer of regrind; and an outer thermoplastic-based layer.
- an inner thermoplastic-based layer preferably HDPE
- a first layer of adhesive preferably EVOH
- a barrier resin preferably EVOH
- second layer of adhesive preferably EVOH
- a layer of regrind a layer of regrind
- an outer thermoplastic-based layer liners suffer from the relatively high diffusivity of hydrogen in the HDPE inner layer (which is in direct contact with the hydrogen). Hydrogen may concentrate in certain areas inside the HDPE inner layer. This accumulation generates bubbles at pressure release. This bubble formation is referred to herein as blistering. This blistering may cause damage in the form of cracking or mechanical degradation of the liner.
- WO2013108102 discloses a pressure vessel comprising a rounded container comprising a thermoplastic composition.
- the thermoplastic composition comprises a siloxane copolymer.
- the thermoplastic composition further comprises a blend of polyamide. This document does not, however, deal with providing a container having a liner with a low permeability to hydrogen and good blistering resistance. Further, WO2013108102 does not deal with liners being overwrapped with a reinforcing structure
- each shell is made of a polymer composition comprising at least 45% by weight of an aromatic polyamide relative to the total weight of said polymer composition, and at least 10% by weight of an aliphatic polyamide relative to the total weight of said polymer composition.
- a monolayer liner made of a polymer blend (i.e. polymer composition) composed of at least 45% by weight of an aromatic polyamide and at least 10% by weight of an aliphatic polyamide relative to the total weight of the polymer composition.
- the polymer blend of the invention provides for a monolayer liner having reduced thickness, while maintaining low permeability to hydrogen compared to known polyamide-based monolayer liner (i.e. pure PA-6 liner). Further, it provides for a monolayer liner having good mechanical strength for supporting, for example, a filament winding process and without jeopardizing the structure liner integrity after the filament winding process.
- the polymer blend of the invention provides a diffusion-delay function. Using such diffusion-delay function allows protection of the monolayer liner against the cracking effects due to blistering.
- the composite pressure vessel of the invention is capable of storing gases at pressures above 700 bars.
- Figure 1 illustrates schematically a composite pressure vessel according to a particular embodiment of the present invention and a method for producing such composite pressure vessel.
- two shells 1 and 2 are made separately by injection moulding (or by injection-compression moulding). Since injection moulding process is conventional and well known in the art, it will not be described in any further detail. Such injection moulding process is for example described in document US 20140312043 .
- Each shell 1 and 2 is made of a polymer composition comprising at least 45% by weight of an aromatic polyamide relative to the total weight of the polymer composition, and at least 10% by weight of an aliphatic polyamide relative to the total weight of the polymer composition.
- the polymer composition of the present invention is prepared by dry-blending the aromatic polyamide and the aliphatic polyamide in a twin-screw extruder.
- the aromatic polyamide and the aliphatic polyamide can be dry-blended in a Latech LTE 26-44 twin-screw extruder.
- the two shells 1 and 2 are then welded together to form a monolayer liner 3.
- the liner 3 comprises a cylindrical portion 3a and two dome portions 3b, 3c formed at both ends of the cylindrical portion.
- a metal mouth piece 3d, 3e may be attached to the top of each dome portion 3b, 3c.
- a filament winding 4 is arranged on top of the liner 3.
- the filament winding (carbon or glass fibers) forms a reinforcing structure.
- Other reinforcing structure may be used.
- TW (Tape Winding) method can be used.
- the TW method is a method in which a tape shaped prepreg is wound around the liner.
- "braiding" method can be used to form a body on the periphery of the liner by braiding a plurality of fibre bundles, and the body is impregnated with resin to be cured.
- the polymer composition of the present invention is composed of at least 45% by weight of an aromatic polyamide and at least 10% by weight of an aliphatic polyamide relative to the total weight of the polymer composition.
- aromatic polyamides are polymers comprising at least one repeating units of "type 1" having at least one CONH group in the polymer chain and at least one aromatic group.
- aromatic groups typically originate in a diacid monomer, and include terephthalic acid (TA), isophthalic acid (IPA), phthalic acid, dodecanedioic acid etc.
- aliphatic polyamides are polymers comprising at least one repeating units of "type 2" having at least one CONH group in the polymer chain.
- Type 2 repeating units are characterized in that 0 mol% thereof comprises an aromatic group.
- the maximum content of aromatic group-containing repeating units in an aliphatic polyamide herein is 0 mol% based on 100 mol% repeating units in the polymer.
- such aliphatic groups may originate in a diamine monomer, and include aliphatic diamines comprising 4 to 12 carbon atoms, such as hexamethylene diamine (HMDA), nonane diamine, 2-methyl-1, 5 pentadiamine, and 1,4-diaminobutane, etc.
- HMDA hexamethylene diamine
- nonane diamine 2-methyl-1, 5 pentadiamine
- 1,4-diaminobutane 1,4-diaminobutane, etc.
- One useful diacid source of aliphatic units is
- the polymer composition of the present invention presents an excellent balance of properties such as hydrogen permeability, mechanical properties and welding performance.
- the polymer composition of the present invention has a lower hydrogen permeability than a pure PA6 composition. It has also a good resistance to blistering and can resist to the high temperature variations during the refuelling operation, which is characterized in a melt temperature range between 280°C and 305°C.
- the polymer composition has unsatisfactory mechanical property.
- the polymer composition has unsatisfactory welding performance.
- the weight ratio between the aromatic polyamide and the aliphatic polyamide is comprised between 1,4 and 9 and the content of the aliphatic polyamide is greater or equal to 10% and inferior to 35% by weight relative to the total weight of the polymer composition and the content of the aromatic polyamide is greater or equal to 45% by weight relative to the total weight of the polymer composition.
- the polymer composition of the present invention comprises from 65 to 90% by weight of aromatic polyamide (measured by NMR spectroscopy), and from 10 to 35% by weight of aliphatic polyamide (measured by NMR spectroscopy).
- the polymer composition has lower welding performance (i.e. the burst pressure of a tank obtained by welding of 2 half-shells is below 4 bars).
- the polymer composition Above 65% by weight of aromatic polyamide relative to the total weight of the polymer composition, the polymer composition has improved tensile modulus at 60°C according to ISO527 at 1 mm/min.
- the tensile modulus obtained is superior to 500MPa at 65% by weight of aromatic polyamide relative to the total weight of the polymer composition. The deformation of the liner is thus reduced during ageing.
- PPA polyphthalamides
- residues of terephthalic acid or isophthalic acid or a combination of the two comprise at least 55% molar of the dicarboxylic acid portion of the repeating structural units in the polymer chain.
- PPA comprises more than 55 mole% of the repeating structural units formed by the polycondensation reaction between at least one phthalic acid and at least one aliphatic diamine.
- the aliphatic diamine can be notably hexamethylenediamine, trimethyl hexamethylene diamine, nonanediamine, 2- methyl-1,5 pentadiamine, and 1,4-diaminobutane, cycloaliphatic diamine.
- Such composition is commercially available.
- the aromatic polyamide is a polyphtalamide (PPA).
- aromatic polyamides are polyarylamide or PMXDAs, i.e. aromatic polyamides comprising more than 50 mole% of recurring units formed by the polycondensation reaction between at least one aliphatic diacid (such as adipic acid) and metaxylylenediamine.
- aromatic polyamide based on metaxylylenediamine is PA MXD 6.
- aromatic polyamide for example, commercially available AMODEL® AT1001L
- aliphatic polyamide for example, commercially available PA6 Technyl® C548B
- This method includes the following elements:
- the lower permeation of the polymer composition of the present invention allows to reduce the total thickness from typically 4mm (on an injection moulded pure PA6 liner) to 3mm.
- the final reduction of the thickness of the liner allows typically to gain 1L of hydrogen gas storage for a given space on the vehicle and to reduce the weight of the composite pressure vessel by at least 1kg.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2017/075339 WO2018065515A1 (fr) | 2016-10-05 | 2017-10-05 | Récipient composite sous pression présentant un revêtement monocouche |
US16/339,559 US11359766B2 (en) | 2016-10-05 | 2017-10-05 | Composite pressure vessel with a monolayer liner |
CN201780061744.6A CN109790377B (zh) | 2016-10-05 | 2017-10-05 | 具有单层衬里的复合材料压力容器 |
EP17784251.5A EP3523372B1 (fr) | 2016-10-05 | 2017-10-05 | Réservoir composite sous pression avec revêtement monocouche |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16305973 | 2016-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3275939A1 true EP3275939A1 (fr) | 2018-01-31 |
Family
ID=56561325
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16192469.1A Withdrawn EP3275939A1 (fr) | 2016-07-27 | 2016-10-05 | Réservoir composite sous pression avec revêtement monocouche |
EP17754288.3A Pending EP3491068A1 (fr) | 2016-07-27 | 2017-07-27 | Composition de réservoir de carburant |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17754288.3A Pending EP3491068A1 (fr) | 2016-07-27 | 2017-07-27 | Composition de réservoir de carburant |
Country Status (4)
Country | Link |
---|---|
US (1) | US11034236B2 (fr) |
EP (2) | EP3275939A1 (fr) |
CN (1) | CN109476911B (fr) |
WO (1) | WO2018019956A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018065515A1 (fr) * | 2016-10-05 | 2018-04-12 | Plastic Omnium Advanced Innovation And Research | Récipient composite sous pression présentant un revêtement monocouche |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US20090203845A1 (en) * | 2008-02-12 | 2009-08-13 | Ube Industries, Ltd., A Corporation Of Japan | Hydrogen tank liner material and hydrogen tank liner |
DE202010017414U1 (de) * | 2010-11-30 | 2011-11-22 | Lanxess Deutschland Gmbh | Gastank |
WO2013108102A2 (fr) | 2012-01-20 | 2013-07-25 | Sabic Innovative Plastics Ip B.V. | Articles préparés à partir de compositions thermoplastiques et procédés de préparation de tels articles |
US20140023808A1 (en) * | 2011-04-11 | 2014-01-23 | Rhodia Operations | Process for the manufacture of tanks having high barrier properties toward fluids |
US20140312043A1 (en) | 2013-04-17 | 2014-10-23 | Toyoda Gosei Co., Ltd. | Pressure vessel liner, molding die thereof, and pressure vessel |
JP2015147318A (ja) * | 2014-02-05 | 2015-08-20 | 三菱瓦斯化学株式会社 | ガス保持体 |
Family Cites Families (9)
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JP2005007615A (ja) | 2003-06-16 | 2005-01-13 | Toray Ind Inc | 自動車用燃料タンク |
JP5133496B2 (ja) | 2004-04-09 | 2013-01-30 | 三菱エンジニアリングプラスチックス株式会社 | ポリアミド樹脂組成物および燃料タンク部品 |
US7771805B1 (en) * | 2005-06-01 | 2010-08-10 | Ovation Polymer Technology And Engineered Materials, Inc. | Low organic vapor permeation resin composition |
JP2009007384A (ja) | 2005-10-20 | 2009-01-15 | Ube Ind Ltd | 燃料系部品用材料 |
EP2078735B1 (fr) | 2006-10-26 | 2015-01-14 | Mitsubishi Gas Chemical Company, Inc. | Composition de résine thermoplastique dotée d'excellentes propriétés en tant que barrière |
US20110014486A1 (en) * | 2008-03-28 | 2011-01-20 | Ube Industries, Ltd | Polyamide resin composition |
JP5976803B2 (ja) | 2012-07-05 | 2016-08-24 | 旭化成株式会社 | 溶着方法及び溶着体 |
KR102405014B1 (ko) | 2014-12-26 | 2022-06-07 | 미쯔비시 가스 케미칼 컴파니, 인코포레이티드 | 열가소성 수지 조성물 및 이를 포함하는 성형체 |
WO2018065515A1 (fr) * | 2016-10-05 | 2018-04-12 | Plastic Omnium Advanced Innovation And Research | Récipient composite sous pression présentant un revêtement monocouche |
-
2016
- 2016-10-05 EP EP16192469.1A patent/EP3275939A1/fr not_active Withdrawn
-
2017
- 2017-07-27 EP EP17754288.3A patent/EP3491068A1/fr active Pending
- 2017-07-27 US US16/317,367 patent/US11034236B2/en active Active
- 2017-07-27 WO PCT/EP2017/069070 patent/WO2018019956A1/fr unknown
- 2017-07-27 CN CN201780045913.7A patent/CN109476911B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090203845A1 (en) * | 2008-02-12 | 2009-08-13 | Ube Industries, Ltd., A Corporation Of Japan | Hydrogen tank liner material and hydrogen tank liner |
DE202010017414U1 (de) * | 2010-11-30 | 2011-11-22 | Lanxess Deutschland Gmbh | Gastank |
US20140023808A1 (en) * | 2011-04-11 | 2014-01-23 | Rhodia Operations | Process for the manufacture of tanks having high barrier properties toward fluids |
WO2013108102A2 (fr) | 2012-01-20 | 2013-07-25 | Sabic Innovative Plastics Ip B.V. | Articles préparés à partir de compositions thermoplastiques et procédés de préparation de tels articles |
US20140312043A1 (en) | 2013-04-17 | 2014-10-23 | Toyoda Gosei Co., Ltd. | Pressure vessel liner, molding die thereof, and pressure vessel |
JP2015147318A (ja) * | 2014-02-05 | 2015-08-20 | 三菱瓦斯化学株式会社 | ガス保持体 |
Also Published As
Publication number | Publication date |
---|---|
CN109476911B (zh) | 2021-08-20 |
EP3491068A1 (fr) | 2019-06-05 |
US11034236B2 (en) | 2021-06-15 |
CN109476911A (zh) | 2019-03-15 |
US20190315225A1 (en) | 2019-10-17 |
WO2018019956A1 (fr) | 2018-02-01 |
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